2016年12月
Identification of Lysophosphatidic Acid Receptor 1 in Astroglial Cells as a Target for Glial Cell Line-derived Neurotrophic Factor Expression Induced by Antidepressants
JOURNAL OF BIOLOGICAL CHEMISTRY
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- 巻
- 291
- 号
- 53
- 開始ページ
- 27364
- 終了ページ
- +
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1074/jbc.M116.753871
- 出版者・発行元
- AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
Preclinical and clinical evidence suggests that glial cell line-derived neurotrophic factor (GDNF) is important in the therapeutic effect of antidepressants. A previous study demonstrated that the tricyclic antidepressant amitriptyline induces G alpha(i/o) activation, which leads to GDNF expression in astrocytes. However, the specific target expressed in astrocytes that mediates antidepressant-evoked G alpha(i/o) activation has yet to be identified. Thus, the current study explored the possibility that antidepressant-induced G alpha(i/o) activation depends on lysophosphatidic acid receptor 1 (LPAR1), a G alpha(i/o)-coupled receptor. GDNF mRNA expression was examined using real-time PCR and G alpha(i/o) activation was examined using the cell-based receptor assay system CellKey (TM) in rat C6 astroglial cells and rat primary cultured astrocytes. LPAR1 antagonists blocked GDNF mRNA expression and G alpha(i/o) activation evoked by various classes of antidepressants (amitriptyline, nortriptyline, mianserin, and fluoxetine). In addition, deletion of LPAR1 by RNAi suppressed amitriptyline-evoked GDNF mRNA expression. Treatment of astroglial cells with the endogenous LPAR agonist LPA increased GDNF mRNA expression through LPAR1, whereas treatment of primary cultured neurons with LPA failed to affect GDNF mRNA expression. Astrocytic GDNF expression evoked by either amitriptyline or LPA utilized, in part, transactivation of fibroblast growth factor receptor and a subsequent ERK cascade. The current results suggest that LPAR1 is a novel, specific target of antidepressants that leads to GDNF expression in astrocytes.
- リンク情報
- ID情報
-
- DOI : 10.1074/jbc.M116.753871
- ISSN : 0021-9258
- eISSN : 1083-351X
- PubMed ID : 27864362
- Web of Science ID : WOS:000391576300033